What is: Multifactor Authentication - Microsoft Support
How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!
Set up the Microsoft Authenticator app as your verification method
Method. Used for. Authenticator app. Two-factor verification and password reset authentication. Text messages. Two-factor verification and password reset authentication.
Join a meeting without an account in Microsoft Teams
Learn how to join a Microsoft Teams meeting if you don't have an account. Join a Teams meeting as a guest in the Windows app or on the web.
Applies To:
Microsoft Teams
在 PowerPoint 中手动创建目录 - Microsoft 支持
PowerPoint 2016 for Mac 中没有自动在演示文稿中创建摘要幻灯片或目录幻灯片的功能。 你可以改为将幻灯片标题复制到一个新的幻灯片，手动创建你自己的摘要幻灯片或目录幻灯片。
Applies To:
PowerPoint for Microsoft 365, PowerPoint for Microsoft 365 for Mac, PowerPoint 2021, PowerPoint 2021 for Mac, PowerPoint 2019, PowerPoint 2019 for Mac, PowerPoint 2016
Microsoft .NET Framework 4.7.2 offline installer for Windows
Issues that are fixed in this update. The following issues are fixed for .NET Framework 4.7.2. SQL Server (SQL) Fixes an issue in which the .NET Framework API SqlConnection.ConnectionString property is used to set a null or empty connection string. In this situation, a Null Reference Exception (NRE) occurs when you use the API together with .NET Framework 4.7.2.
Windows Media Player - Microsoft Support
Download Windows Media Player. Get Windows Media Player for your version of Windows, or learn how to play Windows Media files on your Mac. Get the details here.
Office cheat sheets - Microsoft Support
Training: Get up to speed in minutes, quickly refer to things you’ve learned, and master keyboard shortcuts with these handy cheat sheets for Microsoft Office.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Microsoft 365 for home, Office for business, Office 365 Small Business
Excel 帮助和学习
查找 Microsoft Excel 帮助和学习资源。 了解如何有效使用 Excel 的指导文章、指南、培训视频和提示。
Troubleshoot Surface Type Cover or Keyboard - Microsoft Support
You'll see the logo screen on your screen. Continue to hold the Volume Up button. Release the button when the UEFI screen appears. If you have a Windows Pro/Enterprise device (not a Windows Home device), you can then toggle off Type Cover port from the Devices menu and exit UEFI. Re-enter UEFI (press power + Volume Up) and toggle Type Cover port back on, then check if the Keyboard works in UEFI.
How do I sign in to Skype? - Microsoft Support
Note : Once you've signed in, Skype will remember your sign in information when you close Skype or sign out and choose to remember your account settings. If you don't have a Skype or Microsoft account: Visit Skype.com from your browser and download Skype.